Vetpen Starter Kit for Dogs & Cats, slide 1 of 1

Vetpen Starter Kit for Dogs & Cats

Prescription Item

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    $166.71 FREE Shipping on this item

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Strength: 0.5 IU - 8 IU in 1/2 unit increments
  • Click to select 1 IU - 16 IU in 1 unit increments In stock

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Help deliver your pet’s insulin with ease by using VetPen’s Starter Kit for Dogs & Cats. This kit comes with an automatic insulin delivery pen, a travel pouch, a needle remover, a dose selector adaptor, a release button extension and instructions for accurate administration. VetPen should only be used with 2.7 ml Vetsulin cartridges and Vetsulin cartridges are designed to only be used with VetPen and 29G/12 MM pen needles. The VetPen 8 delivers 0.5-8 units in ½ unit increments and the VetPen 16 delivers 1-16 units in one-unit increments. This starter kit is designed to help canine companions and feline friends get more accurate doses consistently (Vetsulin cartridges are sold separately).

Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.


VetPen is an automatic insulin delivery pen for animal use only.

Possible Side Effects

Dogs and cats known to have a systemic allergy to pork or pork products should not be treated with Vetsulin. Vetsulin is contraindicated during periods of hypoglycemia.

Drug & Food Interactions

Talk to your veterinarian about any other drugs your pet is taking before starting this medication.


Vetsulin should not be used in dogs or cats known to have a systemic allergy to pork or pork products. Vetsulin is contraindicated during periods of hypoglycemia. Keep out of reach of children. As with all insulin products, careful patient monitoring for hypoglycemia and hyperglycemia is essential to attain and maintain adequate glycemic control and prevent associated complications. Overdosage can result in profound hypoglycemia and death. The safety and effectiveness of Vetsulin in puppies and kittens, breeding, pregnant, and lactating dogs and cats has not been evaluated.

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  • Item Number
  • Common Brand Name(s)
    Vetpen, Vetsulin
  • For Use With
    Dogs & Cats
  • Generic Name
    Purified Porcine Insulin
  • Administration Form
  • Lifestage
  • Product Form
  • Health Condition
  • Drug Type
    Devices & Supplies

Active Ingredients: purified porcine insulin (35% amorphous and 65% crystalline) - 40 IU, Zinc (as chloride) - 0.08 mg, Sodium acetate trihydrate - 1.36 mg, Sodium chloride - 7.0 mg, Methylparaben (preservative) - 1.0 mg.

Recommended Dosage

The initial recommended vetsulin dose is 0.5 IU insulin/kg body weight. Initially, this dose should be given once daily concurrently with, or right after a meal. Twice daily therapy should be initiated if the duration of insulin action is determined to be inadequate. If twice daily treatment is initiated, the two doses should each be 25% less than the once daily dose required to attain an acceptable nadir. For example, if a dog receiving 20 units of vetsulin once daily has an acceptable nadir but inadequate duration of activity, the vetsulin dose should be changed to 15 units twice daily.

Storage Instructions

Store in an upright position under refrigeration at 36°F to 46°F. Do not freeze. Protect from light. The loaded VetPen can be stored on its side.


What makes VetPen Unique?

While insulin pens have been commonly used in the management of human diabetes for some time, VetPen is the first such device designed exclusively for use in cats and dogs.

Using the same technology found in human insulin pens, VetPen:

  • Is more convenient and easier to use than insulin vials and syringes
  • Delivers an accurate dose consistently over time, with less chance of error
  • Provides a better fit to pet owners lifestyles takes fewer steps to prepare doses once primed (air removed from cartridge) and can be used anywhere

Can VetPen be used with different insulins?

No. VetPen must be used with specially designed 3 mL cartridges containing 2.7 mL of 40 IU/mL concentration of Vetsulin, the world's most trusted veterinary insulin, proven safe and effective for more than 25 years in hundreds of thousands of pets with diabetes.* To avoid damaging VetPen and dosing errors, cartridges containing other insulin should not be used with VetPen.

How does selecting a dose with VetPen differ from drawing up a dose with a syringe?

While the overall injection process is similar, VetPen allows you to select doses more accurately. With just the turn of a dial, you can select a customized dose of insulin down to 0.5 units. And, with a push of the release button, the VetPen's internal mechanism works to deliver the precise dose each and every time.

Is VetPen reusable?

Yes. VetPen contains an insulin cartridge that allows multiple doses to be provided with minimal preparation time. When all the insulin has been used, simply remove the empty cartridge and insert a new one. Please note that sterile needles are designed for single use only and should not be reused. Tests show that VetPen lasts for at least 3,000 uses.

What type of needle is used with VetPen?

VetPen is designed to work optimally with 29 gauge/mm needles, which are small, thin, triple-sharpened, and specially lubricated. This equates to a lower penetration force and little to no discomfort for the pet. These are the only needles that should be used with VetPen.

Rating: 4.0 of 5 stars 3 Reviews 3 Reviews 4 out of 5 Stars

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  • 5 out of 5 stars

    Great product

    By Tiah on May 9, 2021

    I have only had this for a few days but it’s very good I received it quickly it was packed correctly and the silicone needles do not hurt my pet and it the pen makes it easier to administer my pet her shot

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  • 5 out of 5 stars

    Great tool!

    By Neice on Sep 26, 2020

    I love the VetPen, because I have MS, and my fingers don’t work so good all the time, but I am having trouble getting the needle off. The two needle removing devices are not working, and I have to unscrew it by hand, which is hard and sharp. Am I the only one who has a problem with this?

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  • 2 out of 5 stars

    Not worth the money

    By GGMM on Jul 29, 2020

    It’s not worth the money, it’s more difficult and takes too long. My dog is the biggest wiggle worm and I was told this was going to help. Well it’s worse, and now I’m out all the money I paid because I can’t use it on him. Don’t buy if your dog isn’t going to sit still for 5 seconds with a needle stuck in them. Expensive and useless.

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